月度归档：2011年06月

xcore JavaScript开发版

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       xcore. js 定位于将自己做成一个微内核、提取各著名javascript库的优秀功能的小型javascript库。

       经过很长时间断断续续的编写， 一直未能达到我的要求，为了该项目能够快速成长，达到我的初期目标，我还是决定将这个很不完美的开发版本发布出来，以求大家指正，提供一些建议。

       项目地址： code.google.com/p/xcoretoolkit/

 

       作者：豆博草堂

          

linux 下jboss启动错误解决办法

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 前几天，在redhat advanced server 4上面安装jboss 4.2.2.GA（这台服务器的ip为公网的）,用./run.sh -b xxx.xxx.xxx.xxx(ip) 启动时发生了下面的错误：

16:55:29,558 DEBUG [SARDeployer] create operation failed for package file:/opt/jboss-4.2.2.GA/server/default/conf/jboss-service.xml
org.jboss.deployment.DeploymentException: – nested throwable: (java.lang.reflect.InvocationTargetException)
    at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:196)
    at org.jboss.system.ServiceController.install(ServiceController.java:226)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
    at $Proxy4.install(Unknown Source)
    at org.jboss.deployment.SARDeployer.create(SARDeployer.java:249)
    at org.jboss.deployment.MainDeployer.create(MainDeployer.java:969)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:818)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:766)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
    at $Proxy5.deploy(Unknown Source)
    at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:482)
    at org.jboss.system.server.ServerImpl.start(ServerImpl.java:362)
    at org.jboss.Main.boot(Main.java:200)
    at org.jboss.Main$1.run(Main.java:508)
    at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.reflect.InvocationTargetException
    at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1451)
    at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1350)
    at org.jboss.mx.server.MBeanServerImpl.createMBean(MBeanServerImpl.java:345)
    at org.jboss.system.ServiceCreator.install(ServiceCreator.java:157)
    at org.jboss.system.ServiceConfigurator.internalInstall(ServiceConfigurator.java:451)
    at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:171)
    … 36 more
Caused by: javax.management.MBeanException
    at org.jboss.mx.interceptor.ReflectedDispatcher.handleInvocationExceptions(ReflectedDispatcher.java:180)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:163)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.server.MBeanServerImpl$3.run(MBeanServerImpl.java:1422)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1417)
    … 41 more
Caused by: javax.management.MBeanRegistrationException: preRegister() failed: [ObjectName=’jboss.remoting:service=NetworkRegistry’, Class=org.jboss.remoting.network.NetworkRegistry (org.jboss.remoting.network.NetworkRegistry@1dee400)]
    at org.jboss.mx.server.registry.BasicMBeanRegistry.invokePreRegister(BasicMBeanRegistry.java:713)
    at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:211)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    … 51 more
Caused by: java.lang.RuntimeException: Exception creating identity: xen-a: xen-a
    at org.jboss.remoting.ident.Identity.get(Identity.java:211)
    at org.jboss.remoting.network.NetworkRegistry.preRegister(NetworkRegistry.java:268)
    at org.jboss.mx.server.AbstractMBeanInvoker.invokePreRegister(AbstractMBeanInvoker.java:966)
    at org.jboss.mx.modelmbean.ModelMBeanInvoker.invokePreRegister(ModelMBeanInvoker.java:489)
    at org.jboss.mx.server.AbstractMBeanInvoker.preRegister(AbstractMBeanInvoker.java:654)
    at org.jboss.mx.server.registry.BasicMBeanRegistry.invokePreRegister(BasicMBeanRegistry.java:697)
    … 56 more
16:55:29,561 DEBUG [SARDeployer] Unregistering service UCL=jmx.loading:UCL=dcb03b
16:55:29,561 DEBUG [UnifiedLoaderRepository3] UnifiedLoaderRepository removed(true) org.jboss.mx.loading.UnifiedClassLoader3@dcb03b{ url=null ,addedOrder=2}
16:55:29,564 ERROR [MainDeployer] Could not create deployment: file:/opt/jboss-4.2.2.GA/server/default/conf/jboss-service.xml
org.jboss.deployment.DeploymentException: – nested throwable: (java.lang.reflect.InvocationTargetException)
    at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:196)
    at org.jboss.system.ServiceController.install(ServiceController.java:226)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
    at $Proxy4.install(Unknown Source)
    at org.jboss.deployment.SARDeployer.create(SARDeployer.java:249)
    at org.jboss.deployment.MainDeployer.create(MainDeployer.java:969)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:818)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:766)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
    at $Proxy5.deploy(Unknown Source)
    at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:482)
    at org.jboss.system.server.ServerImpl.start(ServerImpl.java:362)
    at org.jboss.Main.boot(Main.java:200)
    at org.jboss.Main$1.run(Main.java:508)
    at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.reflect.InvocationTargetException
    at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1451)
    at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1350)
    at org.jboss.mx.server.MBeanServerImpl.createMBean(MBeanServerImpl.java:345)
    at org.jboss.system.ServiceCreator.install(ServiceCreator.java:157)
    at org.jboss.system.ServiceConfigurator.internalInstall(ServiceConfigurator.java:451)
    at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:171)
    … 36 more
Caused by: javax.management.MBeanException
    at org.jboss.mx.interceptor.ReflectedDispatcher.handleInvocationExceptions(ReflectedDispatcher.java:180)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:163)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.server.MBeanServerImpl$3.run(MBeanServerImpl.java:1422)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1417)
    … 41 more
Caused by: javax.management.MBeanRegistrationException: preRegister() failed: [ObjectName=’jboss.remoting:service=NetworkRegistry’, Class=org.jboss.remoting.network.NetworkRegistry (org.jboss.remoting.network.NetworkRegistry@1dee400)]
    at org.jboss.mx.server.registry.BasicMBeanRegistry.invokePreRegister(BasicMBeanRegistry.java:713)
    at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:211)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    … 51 more
Caused by: java.lang.RuntimeException: Exception creating identity: xen-a: xen-a
    at org.jboss.remoting.ident.Identity.get(Identity.java:211)
    at org.jboss.remoting.network.NetworkRegistry.preRegister(NetworkRegistry.java:268)
    at org.jboss.mx.server.AbstractMBeanInvoker.invokePreRegister(AbstractMBeanInvoker.java:966)
    at org.jboss.mx.modelmbean.ModelMBeanInvoker.invokePreRegister(ModelMBeanInvoker.java:489)
    at org.jboss.mx.server.AbstractMBeanInvoker.preRegister(AbstractMBeanInvoker.java:654)
    at org.jboss.mx.server.registry.BasicMBeanRegistry.invokePreRegister(BasicMBeanRegistry.java:697)
    … 56 more

 

请注意红色部分 ：Exception creating identity: xen-a: xen-a   应该是xen-a引起的。上网搜索、试验后发现,在/etc/hosts中添加:

      xxx.xxx.xxx.xxx(公网ip)              xen-a

然后就可解决启动错误，

 

MySQL最大连接数设置

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客户端登录：mysql -uusername -ppassword

设置新的最大连接数为200：mysql> set GLOBAL max_connections=200

显示当前运行的Query：mysql> show processlist

显示当前状态：mysql> show status

退出客户端：mysql> exit

查看当前最大连接数：mysqladmin -uusername -ppassword variables |find "max_con"